<template>
    <div>
        <!--面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card class="">
            <!-- 搜索与添加区域 -->

            <el-row :gutter='20'>
                <el-col :span='8'>
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear='getUserList'>
                        <el-button slot="append" icon="el-icon-search" @click="getUserList" ></el-button>
                    </el-input>
                </el-col>
                <el-col :span='4'>
                    <el-button type='primary' @click="addDialogVisible =true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区域 -->
            <el-table
            :data='userList'
            border
            stripe
            >
                <el-table-column
                label='#'
                type='index'
                ></el-table-column>
                <el-table-column
                label='姓名'
                prop='username'
                ></el-table-column>
                <el-table-column
                label='邮箱'
                prop='email'
                ></el-table-column>
                <el-table-column
                label='电话'
                prop='mobile'
                ></el-table-column>
                <el-table-column
                label='角色'
                prop='role_name'
                ></el-table-column>
                <el-table-column
                label='状态'
                >
                <!-- 作用域插槽 -->
                <template slot-scope="scope">
                    <!-- {{scope.row}} -->
                    <el-switch
                    v-model="scope.row.mg_state"
                    @change="userStateChanged(scope.row)"
                    >
                    </el-switch>
                </template>
                </el-table-column>
                <!-- 也是作用域插槽 -->
                <el-table-column
                label='操作'
                width='180px'
                >
                <template slot-scope="scope" >
                    <!-- 修改按钮 -->
                    <el-button type="primary" icon="el-icon-edit" size='mini' @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size='mini' @click="removeUserByid(scope.row.id)"></el-button>
                    <!-- 分配角色 -->
                      <el-tooltip effect="dark" content="分配角色" placement="top" :enterable='false'>
                        <el-button type="warning" icon="el-icon-setting" size='mini' @click="setRole(scope.row)" ></el-button>
                      </el-tooltip>
                </template>
                </el-table-column>
            </el-table>
            <!-- 底部分页区域 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
            </el-pagination>
        </el-card>
        <!-- 添加用户对话框 -->
        <el-dialog
          title="添加用户"
          :visible.sync="addDialogVisible"
          width="50%"
          @close='addDialogClosed'
          >
          <!-- 主体 -->
          <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
              <el-form-item label="用户名" prop="username">
                  <el-input v-model="addForm.username"></el-input>
              </el-form-item>
              <el-form-item label="密码" prop="password">
                  <el-input v-model="addForm.password"></el-input>
              </el-form-item>
              <el-form-item label="邮箱" prop="email">
                  <el-input v-model="addForm.email"></el-input>
              </el-form-item>
              <el-form-item label="手机" prop="mobile">
                  <el-input v-model="addForm.mobile"></el-input>
              </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
              <!-- 底部按钮区域 -->
              <el-button @click="addDialogVisible = false">取 消</el-button>
              <el-button type="primary" @click="addUser">确 定</el-button>
          </span>
        </el-dialog>
        <!-- 修改用户的对话框 -->
        <el-dialog
          title="修改用户"
          :visible.sync="editDialogVisible"
          width="50%"
          @close='editDialogClosed'
          >
         <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名" >
              <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop='email'>
              <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop='mobile'>
              <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
         </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
          </span>
        </el-dialog>
        <!--  分配角色的对话框-->
        <el-dialog
          title="分配角色"
          :visible.sync="setRoleDialogVisible"
          width="50%"
          @close='setRoleDialogClosed'
         >
          <div>
            <p>当前用户：{{userInfo.username}}</p>
            <p>当前角色：{{userInfo.role_name}}</p>
            <p>
              分配新角色：
              <el-select v-model="seleteRoleId" placeholder="请选择">
                <el-option
                  v-for="item in rolesList"
                  :key="item.id"
                  :label="item.roleName"
                  :value="item.id">
                </el-option>
              </el-select>

            </p>
          </div>
          <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
          </span>
        </el-dialog>
    </div>
</template>
<script>
export default {
  data () {
    //   验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的方法
      const regEmail = /^[a-z,A-Z,0-9]+@[a-z,A-Z]+.[a-z,A-Z]+$/
      if (regEmail.test(value)) {
        //   合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的方法
      const regMobile = /^1[3456789]\d{9}$/
      if (regMobile.test(value)) {
        //   合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        pagesize: 2
      },
      userList: [],
      total: 0,
      //   控制添加用户的显示
      addDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //   添加用户表单规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3-10之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '密码的长度在6-15之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单验证对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色id之
      seleteRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    //   获取users接口的数据
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange (newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch状态的改变 true/ false
    async userStateChanged (userInfo) {
      console.log(userInfo)
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async vaild => {
        // console.log(vaild)
        if (!vaild) return false
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 隐藏对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      this.editDialogVisible = true
      // console.log(id)
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询失败')
      }
      this.editForm = res.data
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async vaild => {
        // console.log(vaild)
        if (!vaild) {
          return false
        }
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功')
      })
    },
    // 根据id删除对应的信息
    async removeUserByid (id) {
      // 弹框提示是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '删除用户', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 用户确认删除，返回值为i字符串confirm
      //  不确认则报错 需要用catch 取得返回值为cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      // console.log('确认删除')
      console.log(id)
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前，获取所有的角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    async saveRoleInfo () {
      if (!this.seleteRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.seleteRoleId })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.seleteRoleId = ''
      this.userInfo = ''
    }
  }
}
</script>
<style lang="less" scoped>

</style>
